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using images to install RH

In Solaris you can create an image of an existing system and place
that image on a jumpstart server to install on other systems. It can be
completely automated. Does linux (RH in particular) have the same
capability using the kickstart server ? All I can find are like
wrappers around dd .

I believe with RH you need their satellite server, which is an expense, and then provisioning, which is another expense. SuSE can do this without extra license expenses using NFS shares, so I would think that strategy would work with other distros, including maybe RH. I do not have experience with other distros. Perhaps someone knows if there is something less expensive available via CentOS?

I have not found any info on how to create or install an image
using the kickstart server. There is documentation on how to install
the RH OS, patches,etc but not how to create and install an existing an
image of an exist RH installation.

If the only problem you have is an image of a system.
You can get the image from one of the system you built manually.
The image usually in /root directory. Is either call ks.cfg or anaconda-ks.cfg.
You can then copy the ks.cfg to you kickstart machine.
PXE boot will search PATH to this file in this directory.
/tftpboot/pxelinux.cfg
You can create file call default which contain the path to ks.cfg
ks.cfg can be done VIA NFS